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L.5 · ADVANCED · 2 MIN

Capital Structure Optimization: Finding the Sweet Spot

Optimal capital structure minimizes WACC and maximizes enterprise value. But ‘optimal’ is not a single number — it’s a range defined by credit ratings, covenant capacity, industry norms, and strategic flexibility.

Quiz · 5 questions ↓
§ 01
ConstraintWhat It LimitsTypical Range
Investment-grade targetKeep rating above BBB−Debt/EBITDA < 3–4x
Covenant headroomStay above minimum DSCRDSCR > 1.5–2.0x
Industry normsDon’t deviate too far from peersWithin 1 standard deviation
Strategic flexibilityMaintain capacity for M&A or downturnsUnused revolver + cash buffer
§ 02

Theory says maximize debt until the tax shield equals marginal distress cost. Practice says maintain a buffer for bad times. The companies that go bankrupt are often those that optimized capital structure for good times only.

§ 03
Compare leverage ratios across a peer group in **Fundamentals**. Is the most leveraged company the cheapest (lowest WACC) or is it priced at a discount due to distress risk?
§ 04
A CFO proposes taking leverage from 2x to 5x Debt/EBITDA to lower WACC. What’s the risk?
§ 05

The best capital structures are not the most aggressive — they’re the ones that survive downturns without requiring dilutive equity raises or fire sales. Resilience is more valuable than optimization.

§ 06
Optimal capital structure — is it the leverage ratio that MAXIMIZES ROE, or MINIMIZES WACC?
Five questions · AI feedback

Sit with the ideas.

A BBB-rated industrial company has Net Debt/EBITDA of 3.2x, interest coverage of 4.5x, and its sector median for BBB is 2.5-3.5x leverage. Management proposes a leveraged recapitalization to buy back shares, pushing leverage to 4.5x. What is the likely consequence?

Why:
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